A printing core structure of a printing machine

Abstract

This utility model relates to a printing core structure for a printing press. This structure belongs to the field of printing press technology and solves the problem of poor screen printing plate installation in existing printing presses. The structure includes a support structure and a clamping mechanism. The support structure includes a fixed frame and a movable frame, with a scraper mechanism mounted on the movable frame. The clamping mechanism includes a mounting frame and a movable frame that slides relative to the mounting frame. The distance between the movable frames is adjusted by moving them in opposite directions to facilitate clamping and fixing screens of different sizes. Additionally, an elastic sheet with an arc-shaped structure is installed inside the movable frame. When the screen is clamped inside the movable frame, the elastic sheet presses against the screen to ensure the screen's longitudinal stability. Furthermore, the ends of the elastic sheet can slide to change its curvature, further ensuring the pressing effect of the elastic sheet on the screen and guaranteeing the stability of the screen.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and more specifically, to a printing core structure for a printing press. Background Technology

[0002] A printing press is a device used in the field of printing technology to perform printing. There are various types of printing presses available, such as rotary printing presses and screen printing presses. Users choose different printing presses according to their actual needs. Among them, screen printing is widely popular due to its relatively simple operation. Existing screen printing presses include a printing core structure and an operating table. The printing core structure uses a squeegee mechanism to scrape ink onto a carrier below the screen, thus completing the printing operation.

[0003] Existing screen printing machines are widely used and come in many varieties. For example, Chinese utility model patent CN217319720U discloses a green and environmentally friendly screen printing device. This device includes a base, a support frame on the base, a squeegee mechanism and a screen plate on the support frame, and a support frame fixedly connected to the support frame. The support frame is detachably connected to the screen plate, and a clamping block and a limiting component are slidably connected to the support frame. The clamping block abuts against the screen plate, and the support frame is equipped with a triggering mechanism to keep the clamping block abutting against the screen plate. The screen plate is restricted to the support frame by the clamping block and the limiting component, and the screen plate can also be removed by the cooperation of the limiting component and the triggering mechanism. Although the above printing device is convenient for assembling and disassembling the screen plate in actual use, the device still has the following defects, which cause inconvenience to the operators.

[0004] Because the aforementioned equipment requires the disassembly and assembly of the wire mesh during use, but since the distance between the support frames is not adjustable, it is difficult to install the wire mesh between the support frames when the length of the wire mesh cannot meet the distance between the support frames, causing some inconvenience to the disassembly and assembly of the wire mesh. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract, and the title of this invention, and such simplifications or omissions shall not be used to limit the scope of this utility model.

[0006] To address the technical problem in the prior art where the size of the wire mesh is mismatched with that of the support frame, making it difficult to install the wire mesh, the present invention adopts the following technical solution.

[0007] A printing core structure for a printing press includes a support structure and a clamping mechanism. The support structure includes a fixed frame and a movable frame. The movable frame is slidably mounted on the fixed frame. A lead screw is also mounted on the fixed frame and threadedly connected to the movable frame. Rotation of the lead screw allows the movable frame to move relative to the fixed frame. A doctor blade mechanism is mounted on the movable frame. The doctor blade mechanism includes a mounting frame that is slidably mounted on the movable frame. A lead screw is also mounted on the movable frame and threadedly connected to the mounting frame. Rotation of the lead screw on the movable frame drives the mounting frame to move relative to the movable frame. A cylinder is mounted on the mounting frame, and the power end of the cylinder is connected to a doctor blade. The clamping mechanism includes a mounting frame that is symmetrically mounted on both sides of the movable frame. Movable frames are slidably mounted on the mounting frames and can move relative to the mounting frames to adjust the distance between the movable frames, thereby clamping and fixing the screen printing plate between the movable frames.

[0008] Preferably, in the above-described printed core structure, threaded rods are installed between the mounting frames, and the movable frames are threadedly assembled with the threaded rods. The mounting frames can be moved towards each other or away from each other by rotating the threaded rods to adjust the distance between the movable frames.

[0009] Preferably, in the above-mentioned printed core structure, the movable frame is a rectangular frame structure, and the end of the movable frame is connected to a connector. The connector is sleeved on the threaded rod and threadedly assembled with the threaded rod. The threaded rod is a bidirectional threaded rod, and the rotation of the threaded rod drives the movable frame to move towards each other or away from each other through the connector.

[0010] Preferably, in the above-described printing core structure, a guide rod is also installed on the movable frame. The guide rod passes through the mounting frame and is slidably assembled with the mounting frame. When the movable frame moves, it drives the guide rod to move, and the guide rod moves relative to the mounting frame.

[0011] Preferably, in the above-described printing core structure, an elastic component is also installed inside the movable frame. When the screen printing plate is held between the movable frames, the elastic component presses against the screen printing plate to achieve longitudinal stability of the screen printing plate.

[0012] Preferably, in the above-described printing core structure, the elastic component includes an elastic sheet, which has an arc-shaped structure. When the screen is held between the moving frames, the elastic sheet presses against the screen.

[0013] Preferably, in the above-mentioned printed core structure, the surface of the movable frame is further provided with an opening groove, and the two ends of the elastic sheet are connected to the sliding sheet through the opening groove. The sliding sheet is located on the surface of the movable frame, and a slider is connected to the sliding sheet. The slider drives the sliding sheet to move so as to adjust the curvature of the elastic sheet.

[0014] Preferably, in the above-mentioned printed core structure, the movable frame and the slide are provided with limiting holes, and the slide is fixed relative to the movable frame by the cooperation of the pin and the limiting holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In the printing core structure of this utility model, the screen printing plate is clamped by a clamping mechanism. The clamping mechanism includes a movable frame that is slidably mounted on the mounting frame. The movable frame can slide relative to the mounting frame to adjust the distance between the movable frames. The movement of the movable frame ensures that screen printing plates of different sizes can be clamped, so as to facilitate the installation and disassembly of the screen printing plate and ensure the effect of use.

[0017] The movable frame of this invention is also equipped with an elastic sheet, which presses against the screen printing plate to ensure the stability of the screen printing plate in the longitudinal direction. In addition, the two ends of the elastic sheet can move relative to the movable frame to adjust the curvature of the elastic sheet, thereby further ensuring the stability of the screen printing plate within the movable frame and ensuring the stability of the screen printing plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the printing press in this utility model;

[0019] Figure 2 This is a diagram showing the state of the printing press during printing in this utility model;

[0020] Figure 3 This is a schematic diagram of the printed core structure in this utility model;

[0021] Figure 4 This is a schematic diagram showing the assembly and disassembly of the printing core structure and screen plate in this utility model;

[0022] Figure 5 This is a schematic diagram of the clamping component in this utility model;

[0023] Figure 6 for Figure 5 Top view;

[0024] Figure 7 for Figure 5 Side view.

[0025] The correspondence between the reference numerals and component names in the attached drawings is as follows.

[0026] 100. Support structure; 200. Clamping mechanism;

[0027] 101. Fixed frame; 102. Movable frame; 103. Squeegee mechanism;

[0028] 201. Mounting frame; 202. Moving frame; 203. Guide rod; 204. Threaded rod; 205. Elastic component;

[0029] 103a. Mounting bracket; 103b. Cylinder; 103c. Scraper;

[0030] 202a, Connector; 202b, Opening slot;

[0031] 205a, elastic sheet; 205b, slider; 205c, block. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1 as well as Figure 2 As shown, it is a schematic diagram of the printing machine in this embodiment. The printing machine in this embodiment is a screen printing device. The printing machine includes an operating table and a printing core structure installed on the operating table. The printing process is realized through the printing core structure.

[0035] like Figure 1 as well as Figure 2 As shown, the printing core structure in this embodiment includes a support structure 100 and a clamping mechanism 200. The support structure 100 is mounted on the operating table. In addition, the clamping mechanism 200 is mounted on the support structure 100. The clamping mechanism 200 is used to clamp the screen. The printing core structure also includes a scraping mechanism 103, which scrapes ink on the screen to achieve the printing purpose.

[0036] like Figure 1-3 As shown, the support structure 100 in this embodiment includes a fixed frame 101 and a movable frame 102. In this embodiment, the fixed frame 101 is fixedly installed on the operating table, and the movable frame 102 is slidably installed on the fixed frame 101. In this embodiment, the movable frame 102 is slidably assembled on the fixed frame 101 and can move along the height direction of the fixed frame 101. It is worth noting that in this embodiment, a lead screw assembly is also installed on the fixed frame 101, and the movable frame 102 is threadedly assembled with the lead screw. By rotating the lead screw, the movable frame 102 can be driven to move along the height direction of the fixed frame 101 to adjust the height of the movable frame 102. In addition, when the lead screw stops rotating, the self-locking performance of the thread makes the movable frame 102 fixed relative to the fixed frame 101, thereby maintaining the stability of the movable frame 102.

[0037] In addition, such as Figure 3 As shown, in this embodiment, a scraping mechanism 103 is slidably mounted on the movable frame 102. The scraping mechanism 103 can move along the length direction of the movable frame 102. It is worth noting that in this embodiment, the scraping mechanism 103 includes a mounting frame 103a, which is slidably assembled with the movable frame 102. In addition, a lead screw is also mounted on the movable frame 102, and the lead screw on the movable frame 102 is threadedly assembled with the mounting frame 103a. In this embodiment, the mounting frame 103a can be driven to move along the length direction of the movable frame 102 by rotating the lead screw on the movable frame 102 to adjust the position of the scraping mechanism 103.

[0038] In addition, such as Figure 3 As shown, the ink scraping mechanism 103 in this embodiment also includes a cylinder 103b and a scraper 103c. In this embodiment, the cylinder 103b is mounted on the mounting frame 103a, and the power end of the cylinder 103b is connected to the scraper 103c. When the printing core structure is working, the cylinder 103b drives the scraper 103c to abut against the screen, and then the screw on the moving frame 102 rotates to drive the ink scraping mechanism 103 to move. The scraper 103c scrapes the ink on the screen to achieve the purpose of screen printing.

[0039] It should also be noted that in this embodiment, there are two scrapers 103c and two cylinders 103b. When one cylinder 103b drives its corresponding scraper 103c to move downward until the scraper 103c presses against the screen, the other cylinder 103b drives its corresponding scraper 103c to move upward away from the screen. Then, the scraper 103c pressing against the screen moves along the length of the screen to scrape the ink. When it needs to move back, the cylinder 103b corresponding to the scraper 103c away from the screen moves its corresponding scraper 103c until it presses against the screen. The other cylinder 103b drives the scraper 103c to move away from the screen. Then, the screw on the moving frame 102 rotates in the opposite direction to make the ink scraping mechanism 103 move back, and the scraper scrapes the ink on the screen and moves it back.

[0040] like Figure 3 as well as Figure 4As shown, in this embodiment, a clamping mechanism 200 is also installed on the movable frame 102. The clamping mechanism 200 is used to clamp the wire mesh plate. In this embodiment, the clamping mechanism 200 includes a mounting frame 201, on which a movable frame 202 is installed. In this embodiment, the movable frames 202 are arranged opposite each other and the movable frames 202 are U-shaped frames. A guide rod 203 is fixedly installed on the movable frame 202. The guide rod 203 passes through the mounting frame 201 and can move relative to the mounting frame 201. In this embodiment, a threaded rod 204 is also provided between the mounting frames 201. One end of the threaded rod 204 is rotatably installed on the mounting frame 201, and the other end of the threaded rod 204 passes through the mounting frame 201 and is connected to a handwheel. The handwheel can drive the threaded rod 204 to rotate.

[0041] In this embodiment, a connector 202a is fixedly connected to the end of the movable frame 202. The connector 202a is sleeved on the threaded rod 204 and threadedly assembled with the threaded rod 204. It is worth noting that the threaded rod 204 in this embodiment is a bidirectional threaded rod, and the thread directions on both sides of the threaded rod 204 are opposite. That is to say, by rotating the threaded rod 204, the movable frames 202 at both ends of the threaded rod 204 can be driven to move towards each other or away from each other, so as to adjust the distance between the movable frames 202.

[0042] In this embodiment, the screen printing plate is detachably installed between the movable frames 202. The movable frames 202 can be moved by rotating the threaded rod 204 to adjust the distance between the movable frames 202 to accommodate the length of the screen printing plate. Therefore, in this embodiment, adjusting the distance between the movable frames 202 can be used to clamp screen printing plates of different sizes to facilitate the installation of the screen printing plate.

[0043] When the movable frame 202 moves, the guide rod 203 moves relative to the mounting frame 201 to ensure the stability of the movable frame 202, so that the movable frame 202 can clamp and fix the wire mesh plate, thus ensuring the stability of the wire mesh plate.

[0044] Example 2

[0045] like Figures 5-7 As shown, in this embodiment of the printing core structure, based on embodiment 1, an elastic component 205 is further installed on the movable frame 202. The elastic component 205 is used to press against the screen printing plate in the longitudinal direction to ensure the stability of the screen printing plate in the longitudinal direction. It is worth noting that in this embodiment, the stability of the screen printing plate is ensured by clamping the screen printing plate at both ends of the movable frame 202. In order to further ensure the stability of the screen printing plate in the longitudinal direction, an elastic component 205 is also provided inside the movable frame 202.

[0046] In this embodiment, the elastic component 205 includes an elastic sheet 205a, which has an arc-shaped structure. Both ends of the elastic sheet 205a are slidably mounted on the inner top wall of the movable frame 202. In this embodiment, the movable frame 202 is also provided with an opening groove 202b. The end of the elastic sheet 205a passes through the opening groove 202b and is connected to a slider 205b. The slider 205b is slidably mounted on the surface of the movable frame 202. A slider 205c is also mounted on the slider 205b, which drives the slider 205c to move the slider 205b along the length direction of the opening groove 202b, thereby changing the curvature of the elastic sheet 205a.

[0047] In this embodiment, when the screen printing plate is clamped in the moving frame 202, the elastic sheet 205a presses against the edge of the screen printing plate to ensure the stability of the screen printing plate in the longitudinal direction. In addition, when the screen printing plate is thin, the slider 205c drives the slider 205b to move along the length direction of the opening groove 202b, thereby changing the curvature of the elastic sheet 205a so that the curved elastic sheet 205a can press tightly against the screen printing plate to ensure the stability of the screen printing plate.

[0048] In addition, such as Figure 5 as well as Figure 6 As shown, in this embodiment, limiting holes are provided on the moving frame 202 and the slider 205b. The slider 205b can be fixed relative to the moving frame 202 by the cooperation of the pin and the limiting hole, so as to ensure that the elastic sheet 205a can maintain the adjusted curvature after adjusting the curvature, thus ensuring the stability of the screen plate.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A printing core structure for a printing press, comprising a support structure (100) and a clamping mechanism (200), wherein the support structure (100) includes a fixed frame (101) and a movable frame (102), the movable frame (102) being slidably mounted on the fixed frame (101), a lead screw being mounted on the fixed frame (101), the lead screw being threadedly mounted on the movable frame (102), and the movable frame (102) being movable relative to the fixed frame (101) by rotating the lead screw; a doctoring mechanism (103) is mounted on the movable frame (102). (103) includes a mounting bracket (103a), which is slidably assembled with a movable bracket (102). A lead screw is also mounted on the movable bracket (102), and the lead screw on the movable bracket (102) is threadedly assembled with the mounting bracket (103a). Rotation of the lead screw on the movable bracket (102) can drive the mounting bracket (103a) to move relative to the movable bracket (102). A cylinder (103b) is mounted on the mounting bracket (103a), and the power end of the cylinder (103b) is connected to a scraper (103c). The characteristic feature is that... The clamping mechanism (200) includes a mounting frame (201), which is symmetrically mounted on both sides of the movable frame (102). The movable frame (202) is slidably mounted on the mounting frame (201). The movable frame (202) can move relative to the mounting frame (201) to adjust the distance between the movable frames (202) so as to clamp and fix the wire mesh between the movable frames (202).

2. The print core structure of a printing press according to claim 1, characterized in that, A threaded rod (204) is installed between the mounting frames (201). The movable frame (202) is threadedly assembled with the threaded rod (204). The mounting frames (201) can be driven to move towards each other or away from each other by rotating the threaded rod (204) to adjust the distance between the movable frames (202).

3. The print core structure of a printing press according to claim 2, characterized in that, The movable frame (202) is a U-shaped frame structure, and the end of the movable frame (202) is connected to a connector (202a). The connector (202a) is sleeved on the threaded rod (204) and threadedly assembled with the threaded rod (204). The threaded rod (204) is a bidirectional threaded rod. The rotation of the threaded rod (204) drives the movable frame (202) to move towards each other or away from each other through the connector (202a).

4. The print core structure of a printing press according to claim 2 or 3, characterized in that, The movable frame (202) is also equipped with a guide rod (203). The guide rod (203) passes through the mounting frame (201) and is slidably assembled with the mounting frame (201). When the movable frame (202) moves, it drives the guide rod (203) to move. The guide rod (203) moves relative to the mounting frame (201).

5. The print core structure of a printing press according to claim 1, characterized in that, The movable frame (202) is also equipped with an elastic component (205). When the wire mesh is held between the movable frames (202), the elastic component (205) presses against the wire mesh to achieve longitudinal stability of the wire mesh.

6. The print core structure of a printing press according to claim 5, characterized in that, The elastic component (205) includes an elastic sheet (205a), which has an arc-shaped structure. When the screen is held between the moving frame (202), the elastic sheet (205a) presses against the screen.

7. The printing core structure of the printing press according to claim 6, characterized in that, The surface of the movable frame (202) is also provided with an opening groove (202b). The two ends of the elastic sheet (205a) pass through the opening groove (202b) and are connected to the slider (205b). The slider (205b) is located on the surface of the movable frame (202), and a slider (205c) is connected to the slider (205b). The slider (205c) drives the slider (205b) to move in order to adjust the curvature of the elastic sheet (205a).

8. The print core structure of a printing press according to claim 7, characterized in that, The movable frame (202) and the slider (205b) are provided with limiting holes, and the slider (205b) is fixed relative to the movable frame (202) by the cooperation of the pin and the limiting holes.

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